Chemical Characterization and Biological Activity of the Essential Oil from Araucaria brasiliensis Collected in Ecuador.

Chemical Characterization and Biological Activity of the Essential Oil from Araucaria brasiliensis Collected in Ecuador.
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DOI:
10.3390/molecules27123793
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发表时间:
2022-06-13
期刊:
Molecules (Basel, Switzerland)
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其他
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本研究的目的是确定的化学成分,物理性质,对映体组成和胆碱酯酶抑制活性的植物南洋杉叶片的挥发油(EO)的蒸汽蒸馏。收集于厄瓜多尔。通过气相色谱-质谱联用(GC-MS)分析在两个毛细管GC柱(DB 5-ms和HP-INNOWax)上测定化学组成。共鉴定出33种化合物,主要成分为:月桂烯(26.08%)、贝壳杉烯(24.86%)、月桂烯(11.02%)、α-蒎烯(9.99%)和5,15-玫瑰二烯(5.87%)。二萜烃类(65.41%),其次是单萜烃类(21.11%),是EO中最具代表性的组分。对映体选择性分析表明,该环氧乙烷生成了4对映体化合物:α-蒎烯、β-蒎烯、γ-木烯和δ-杜松烯。在体外试验中,EO对丁酰胆碱酯酶(BuChE)表现出中度抑制活性(95.7 µg/mL),而对乙酰胆碱酯酶(AChE)无活性(225.3 µg/mL)。需要进一步的体内研究来证实EO的抗胆碱酯酶潜力。
The purpose of this study was to determine the chemical composition, physical properties, enantiomeric composition and cholinesterase inhibitory activity of the essential oil (EO) steam-distilled from the leaves of the plant Araucaria brasiliensis Loud. collected in Ecuador. The chemical composition was determined by gas chromatography coupled to mass spectrometry (GC-MS) analysis on two capillary GC columns (DB5-ms and HP-INNOWax). Thirty-three compounds were identified in the EO; the main compounds were beyerene (26.08%), kaurene (24.86%), myrcene (11.02%), α-pinene (9.99%) and 5,15-rosadiene (5.87%). Diterpene hydrocarbons (65.41%), followed by monoterpene hydrocarbons (21.11%), were the most representative components of the EO. Enantioselective analysis of the EO showed four pairs of enantiomeric compounds, α-pinene, camphene, γ-muurolene and δ-cadinene. In an in vitro assay, the EO showed moderate inhibitory activity towards the enzyme butyrylcholinesterase (BuChE) (95.7 µg/mL), while it was inactive towards acetylcholinesterase (AChE) (225.3 µg/mL). Further in vivo studies are needed to confirm the anticholinesterase potential of the EO.
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